| President Republican - District 51 | 100.% ( 356 of 356 ) precincts reporting as of Mar 4, 2008, at 9:49 a.m. County Returns Other Contests | | Districtwide Results | |
| |
| | Mike Huckabee (Rep) | 3,611 | 11.5 % |   |
| | Duncan Hunter (Rep) | 1,113 | 3.6 % |   |
| | Alan Keyes (Rep) | 120 | 0.3 % |   |
| | Sam Brownback (Rep) | 28 | 0.0 % |   |
| | John H. Cox (Rep) | 66 | 0.2 % |   |
| | Rudy Giuliani (Rep) | 1,188 | 3.8 % |   |
| | John McCain (Rep) | 13,968 | 44.4 % |   |
| | Ron Paul (Rep) | 931 | 3.0 % |   |
| | Mitt Romney (Rep) | 9,924 | 31.5 % |   |
| | Tom Tancredo (Rep) | 52 | 0.1 % |   |
| | Fred Thompson (Rep) | 509 | 1.6 % |   |
|   |
|